[Openstack-stable-maint] Stable check of openstack/oslo.service for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/aff4824066874005a791e2837abcb4... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/630bd5626fee4bda89cba817f3c6966f : SUCCESS in 4m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cbc931d5c82a48079565b16b396797b3 : FAILURE in 3m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/37f3f1dfe97047b5914e5a37260ba418 : SUCCESS in 3m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/dc6cc20e22d74d209b580addc97ff632 : SUCCESS in 3m 39s